i have 2 types of strips-one aqua check with 4 things it tests for and ones that came with spa products that check for 3 (no hard water test)
on the aqua check i get a very high bromine read and on the others very low!(non existent!) ph and everything else checks out ideal------advice?
i shocked anyway

Check the expiration date on the strips..

That could account for the false reading if it's expired. Also, the storage environment of the strips could have affected them. (Unlikely, being expired is MUCH more likely)

Now, I'm a newbie, but here's my thought.
If they are both "good", I would test my water with both, write it down. Then take the water to a spa place and have it tested. Compare, figure out who's telling lies, and never buy that brand again.

Mike